Pump-head.



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PUMP HEAD. 7 APPLICATION FILED MAY 9. 1906.

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UNITED STATES PATENT OFFICE.

WARREN WILLIAMS AND HOBART M. WILLIAMS, OF LORDSBURG, CALIFORNIA, ASSIGNORS TO WILLIAM F. SPRING, OF

'LOS ANGELES, CALIFORNIA.

PUMP-HEAD.

Patented Sept. 10, 1907.

Application filed May 9,1906- Serial No. 316,037.

To all whom it may concern:

Be it known that we, WARREN WILLIAiIs and Ho- BART M. WILLIAMS, both citizens of the United States, residing-at Lordsburg, in the county of Los Angeles and State of California, have invented new and useful Improvements in Pump-Heads, of which the following is a specification.

Our invention relates to a pump head for operating a plunger pump and the object thereof is to produce a pump head which will reciprocate the plunger rod vertically without the use of guides, thereby saving the usual friction and loss of power occasioned by the use of such guides.

We accomplish this object by the mechanism described herein and illustrated in the accompanying drawings in which Figure 1.is a plan of our improved pump head applied to a double plunger pump. Fig. 2.-is a section 011 the line 2 2 of Fig. 1.

In the drawings we have illustrated our device as applied to a double plunger pump but as the mechanism for driving each plunger operates independently of the other mechanism and is a duplicate thereof it may be used for operating a single plunger.

The driving shaft 5 is revolubly mounted in the frame 6 of the pump head. This driving shaft is provided with a power pulley 7 and with pinions, one of which 8, is shown in Fig. 2. 7 These pinions mesh with the driven gears 9 and 10 which are mounted in the upper part of the frame, one on each side thereof, as shown in Fig. 1 of the drawings, These pinions mesh with the like driven gears mounted in the lower part of the frame, one of which 11, is shown in Fig. 2. Gears 9 and 10 are connected together by a shaft or wrist pin 12 which carries block 13. Block 13 is of the same construction and operation and engages plunger operating beam 14 in the same manner as set forth and described in Patent 760,596 granted to us May 24th, 1904. At its outer end beam 14 is pivotally connected to the pump rod 15 and at its inner end it is connected to fulcrum bar 16, which bar is pivotally connected at 17 to the frame of the machine.

When the fulcrum bar is in its vertical position the center of its pivotal connection to the frame is in the same horizontal plane as the center of the driving shaft and the center of its connection with beam 14 is in a horizontal plane with the center of the driven gears. Adjusting links 18 are pivotally connected to the frame, one on each side between the center of the driven gears and the connection between beam 14 and the fulcrum bar and in the horizontal plane that passes through the center of the driven gears. The other ends of these adjusting links are pivotally connected to shaft 19 which shaft passes through a bearing 20 secured upon the under side of beam 14, preferably cast integral therewith. The plunger operating beam 21 of the lower mechanism is connected to the lower pump rod 22 and the inner end is connected to the fulcrum bar 23 and an adjusting link 24 connects lever 21 to the frame in the same manner as described for the upper mech anism. The slide block 25 is carried by shaft or wrist pin 26 which shaft is carried by the gears of the lower mechanism. This slide block is connected to beam 21 beam 14.

In the operation of our pump head the movements of the plunger operating beams are so arranged that the up-stroke is slower than the down-stroke and are so timed that one plunger is always on the up-stroke while the other plunger is going down, and a portion of the time both plungers are moving together 011 the upstroke. By the use of the pivoted fulcrum bar and the adjusting link the rear end of the plunger operating beam will oscillate at the same time that the forward end is moving vertically whereby a vertical movement is given to the plunger rod. The adjusting lever is so constructed as to compensate or move the lever backwardly and cause it to travel on the arc of a circle that will keep the outer end thereof moving on a vertical line. The angle of advance of the slide blocks is regulated by the length of the stroke required for the plungers. The working beam and driven gear may be operatively connected in any suitable manner, but we prefer the manner described as thereby we get a working beam with the minimum amount of material.

Having described our invention what we claim is 1. In a pump operating mechanism, a frame; a working beam; :1 fulcrum bar pivotally connected to the frame and to the rear end of the working beam; means to operate said working beam, said means being connected thereto intermediate its ends, said connection being a sliding connection; and a link pivotally connected to the frame and to the Working beam, said connection to the working beam being between the connection to the operating means and its connection to the fulcrum bar.

In a pump operating mechanism, a frame; a driven gear; a working beam; a plunger rod connected to one end of said working beam; Pfulcrum bar pivotally connected to the frame and to the other end of the working lbeam; an operative connection between said gear and in the same manner that slide block 13 is connected to i said beam; a link pivotally connected to the frame and to the working beam, said connection being between the end connected to the fulcrum bar and theconnection between the gear and the beam; and means to operate said driven gear. V

3. In a pump operatingmechanism, a frame; a working beam; a box slidably mounted upon said beam in contact with the under side of the same; wheels revolubly mounted in said frame, one on each side of said working 10 beam; a wrist pin connected with said wheels and engaging said boxing; a fulcrum bar pivotally connected to the frame and tothe rear end of the working beam; :1 link pivotally connected to the frame and to the working beain, said connection being between the rear end thereof and said slide box; and means to drive said wheels.

In witness that we claim the foregoing we have hereunto subscribed our names this 2nd day of May, 1906.

WARREN WILLIAMS. HOBART M. WILLIAMS.

Witnesses G E. HARPHAM, W. E. BAXTER. 

